CK-12 Physical Science Concepts - For Middle School

4.45. Lever http://www.ck12.org push down with more force than you can push up because you can put your own weight behind it. Th ...

http://www.ck12.org Chapter 4. Motion and Forces ∆= fulcrum I = input force O = output force TheTable4.3 includes the ideal me ...

4.45. Lever http://www.ck12.org FIGURE 4.91 Vocabulary lever: Simple machine consisting of a bar that rotates around a fixed po ...

http://www.ck12.org Chapter 4. Motion and Forces 4.46 Wheel and Axle Describe the simple machine known as a wheel and axle. Rel ...

4.46. Wheel and Axle http://www.ck12.org In a wheel and axle, force may be applied either to the wheel or to the axle. This forc ...

http://www.ck12.org Chapter 4. Motion and Forces Review Describe a wheel and axle. Give an example of a wheel and axle that isn ...

4.47. Pulley http://www.ck12.org 4.47 Pulley Describe the simple machine called a pulley. Compare and contrast the three basic ...

http://www.ck12.org Chapter 4. Motion and Forces http://www.walter-fendt.de/ph14e/pulleysystem.htm Q: Which type of pulley is th ...

4.47. Pulley http://www.ck12.org Mechanical Advantage of Pulleys The mechanical advantage of a simple machine such as a pulley i ...

http://www.ck12.org Chapter 4. Motion and Forces Explore More Watch video number 15 at the following URL, and then answer the qu ...

4.48. Compound Machine http://www.ck12.org 4.48 Compound Machine Define compound machine. Identify the simple machines in a com ...

http://www.ck12.org Chapter 4. Motion and Forces MEDIA Click image to the left for use the URL below. URL: http://www.ck12.org/f ...

4.48. Compound Machine http://www.ck12.org FIGURE 4.94 have a greater mechanical advantage than simple machines. That’s because ...

http://www.ck12.org Chapter 4. Motion and Forces Vocabulary compound machine: Machine that consists of more than one simple mac ...

4.49. References http://www.ck12.org 4.49 References Train: John H. Gray; Bike: Flickr:DieselDemon; Geese: Don McCullough; Mete ...

http://www.ck12.org Chapter 4. Motion and Forces Courtesy of NASA. Curvature of space and time. Public Domain Christopher Auyeu ...

4.49. References http://www.ck12.org CC BY-NC 3.0 Laura Guerin. Examples illustrating how force and distance affect the amount ...

http://www.ck12.org Chapter 5. Energy CHAPTER (^5) Energy Chapter Outline 5.1 ENERGY 5.2 KINETICENERGY 5.3 Potential Energy 5.4 ...

http://www.ck12.org 5.34 INTENSITY ANDLOUDNESS OFSOUND 5.35 FREQUENCY ANDPITCH OFSOUND 5.36 DOPPLEREFFECT 5.37 HEARING AND THEEA ...

http://www.ck12.org Chapter 5. Energy 5.71 ELECTRICCIRCUITS 5.72 SERIES ANDPARALLELCIRCUITS 5.73 ELECTRICPOWER ANDELECTRICALENER ...